In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
a story about a 1 rad that goes bang in the night!
I have worked out most of the kinks in my 1 pipe system (with the help of Dan's books) and this website. For the most part the system is quite with the exception of this pesky radiator that swooshes, ticks and clanks. As luck would have it, it's the radiator in my daughters bedroom (which she now believes is a monster behind that radiator cover).
At first I thought it was the pitch, so I repitched the radiator to a 1/4 bubble and have adjusted and readjusted. No luck. I then moved to the valve, I took the valve apart, repacked it and made sure nothing was obstructing the flow. I even filed down the little lip inside to made sure it had good flow. No luck. I took the old air value off and replace with an adjustable value to slow down the fill time. This helped, but it still clangs and swooshes. It doesn't leak and doesn't appear to be sagging anywhere.
I could use some help on this one. (FYI) it only clangs and swooshes in mid cycle.